hw16-17_sol - Probiem 6,2 6.2 A square box beam is made...

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Unformatted text preview: Probiem 6,2 6.2 A square box beam is made oftwo 20 x 804mm planks and two 20 x 120—mm planks nailed togsther as shown, Knowing that the spacing between the nails is s = 30 mm and {hat the verticai shear in the beam is V= 1200 N, determine (a) the shearing force in each nail, (b) the maximum shearing stress in the beam, ether to form a beam that is 6.3 Three boards, each . rtical shear, Knowing that the allowable shearing force in each m“ f the spacing s between the mags is 3 in‘ subjected to a we is 150 1b, determine ma allowable shear '1 ii ' , are nailed tog 6, 6 The beam shown is fabricated by connecting two channel h , ‘ 5 3138mm ameter spacad longitudinally every 7 5 in D ‘ ‘ me using boits of %xin, di the bolts caused by a shearing fame ems 3‘. ~» zaps average shearing stress in the y axis, ., n Qf% lax figs} :3 P we M 6.9 through 6.12 For the beam and loading shown, consider section n-” and determine (a) the hrgest shearing stress in that section: (b) the shearing stress at poim 12 mm 150 mm’ 12 mm J Problem 8.10 0.3 m . A“ sash” V nm It) kg “Q” 6" 1;:36542 / ' I .éwfwfi M M 3» m, w @5631” {MW “High (a g F) :2. 44"“(10 [mm 7% » fl.» :waaéb ‘3 3 j 3; lo CZan 3* WWW-ww 3w!) a W PM? MW , , . I ‘ ~ blastedtcavemca - ' -‘ timberbeamis 5112, I an i 29 6.29tghfia?:lcji:va‘$e shearing fires m Ihé r1 pmbie 8‘ {Ziisgible spacing 5 ofth ram S: P shear of 1200 lb. Knd' s is 75 lb, determfn e the lags :“ufllt’g # VQ @ A}; J 4”” v3) :5” > an 09 S’g JMQEP an Ext n beam shown is subjected to a Vemcm “x paced mngimdinally every 60 mm a” anyear of me in the nails (:2) at A‘ (b) at B. (Givenfieryg \ . “:1 6.32 The built-up wcode Knowing that the nails are 5 at B, determine the shearing f0 109 mm?) Dimensions in mm 6,44 A beam censists of three planks connected as shown by %-in.-5iameter boks 3 spaeed every 12 an. aiong the longitudinal axis ofthe beam. Knowing that the beam is subjected to a 23004}: verticai shear, determine the average shearing stress in the baits. prcfiem 62% Thief: 1 x: ES—in, Steffi gates are Eel/in iii) {bar if; 6 x 3. angles :0 form a beam with the cross section shown. The: baits have fiimmser and are spaced longimdinafly every 5 in‘ Knowing that the allowable average shearing stress in the boks is 1”) "i, ,emains i115 lai'gsst germifisikie vertiixaé ahegr in me: E? m. (Given: IX 1 = 6123 it! 5‘ ...
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